<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div ip="app">
        <input type="text" v-model="msg">
        <p>{{message}}</p>
    </div>
    <script src="js/vue.js"></script>
    <script>
         var vm=new Vue({
             el:'#app',
             data:{
                 message:'你好，世界'
             }
         })
    </script>
</body>
</html>